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Q.

The far point of a myopic person is 80 cm infront of the eye. What is the power of the lens required to enable him to see very distance objects clearly?

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a

2 D

b

–1.50 D

c

2.75 D

d

–1.25 D

answer is D.

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Detailed Solution

For myopic eye, the person should use a concave lens of focal length =-(far point)
=−80cm=−80100m
i e Power =1 focal length =−10080=−1.25D

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